—Happy birthday!— Thank you! It’s the best present I_________ for.

— _______ we clean the classroom at once?  — No, you _______. You _______ clean it after school. 

--Whose backpack is this? ---It            be Jim’s. Look, his student’s card is in it.

Now that the sign reads, “No person ______ smoke here”, please choose a seat in the smoking area over there if you _______ smoke.

--I went to work on foot yesterday, though it was raining cats and dogs.---You __________ a bus. You were likely to get a cold.